Cobtstrtrgtion oe gas-retorts



H. P. M. BIRKINBINE.

Gas Retort.

No. 12,711. Patented Apr, 17. 1855.

Witnesses; lnventon AM.PHOTD'LITH6.C0.N.Y. (OSBORNE'S PROCESS.)

i To all whom may cohcemt:

making 1 UNITED'STATES PATENT OFFICE.

QHENRY P. MLVSBIRIHNBIINE, 0F PHILADELPHIA, PENNSYLVANIA.

' coNsTnUorrIoN or JGAS-RETORTS.

Specificationof J LettersPatent Nb. 12)?11, dated April 17, 1355.

a Be it knownthatl, HE RY P. MQBIRKIN: BINE,iIOf the city oflBhiladelphiayin the o countyofFPhiladelphia and State of Penn-. fisylvania, haveinventeda new an'dtuseful Improvement in Retorts' for 1 Making Gas and I do hereby declarethe: following is a full; clear, and exact description 0f the construction and operationuof the same refer; ence being hadhto' the annexed drawing, at part of .this specification, in which i 1 Figure 1 is a front elevation. Fig. 2, is

a sideelevationi *Eig. 3; is a section on the line AB. Fig. 4, is afllo ngitudinal sectlon lhejordinary D gas retort ,hascast upon the top of it and forminga part of it an annular space A communicating with the back or closed end of the JretojrtB and extending forward projecting beyond the masonry or setting of the retort where an aperture C for carrying jofl" the gas is provided. The

material from which the gas is to be made is put into the'lower compartment B from which the gas is passed through the compartment and is further subjected to the action of heat as itpasses forward through the annular space A by this means portions of the material from which the gas is made 

